Ember-m3 is an Ember.js addon that provides an alternative model implementation to `DS.Model`, compatible with the rest of the [ember-data](https://github.com/emberjs/data) ecosystem. It's designed for developers working with APIs that have dynamic or varied schemas, allowing them to use a single class for many API endpoints by inferring the schema from the payload and API-specific conventions. This approach can improve runtime performance and developer ergonomics in environments where the API responses are not easily known in advance or are so varied as to require thousands of `DS.Model`s.